Dams in Kauai County, Hawaii
47Total Dams
45High Hazard
0Significant
Dam Safety in Kauai County, Hawaii
Kauai County has 47 dams tracked in the National Inventory of Dams. Of these, 45 are classified as high hazard — meaning failure would probably cause loss of human life. Currently, 41 dams have a condition assessment of poor or unsatisfactory.
The average dam in Kauai County is 107 years old. The most common purpose is irrigation. The tallest dam is Alexander at 141 ft.
Explore more: Oldest dams in Hawaii · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Alexander | High | Fair | 141 | Hydroelectric | 1931 |
| Puu Lua Reservoir | High | Unsatisfactory | 110 | Fish and Wildlife Pond | 1925 |
| Aepo Reservoir | High | Fair | 74 | Irrigation | 1901 |
| Mimino Reservoir | High | Poor | 69 | Irrigation | 1920 |
| Waikoloi Reservoir | High | Poor | 64 | Irrigation | 1958 |
| Piwai Reservoir | High | Poor | 56 | Irrigation | 1916 |
| Kapaia Reservoir | High | Poor | 53 | Irrigation | 1910 |
| Kaneha Reservoir | High | Poor | 51 | Irrigation | 1910 |
| Kaupale Reservoir | High | Poor | 50 | Irrigation | 1910 |
| Ipuolono Reservoir | High | Poor | 50 | Irrigation | 1910 |
| Twin Reservoirs | High | Unsatisfactory | 49 | Other | 1920 |
| Papuaa Reservoir | High | Poor | 48 | Irrigation | 1914 |
| Kumano Reservoir | High | Poor | 48 | Irrigation | 1902 |
| Huinawai Reservoir | High | Poor | 47 | Irrigation | 1902 |
| Kaloko Reservoir | High | Poor | 46 | Irrigation | 1890 |
| Manuhonuhonu Reservoir | High | Poor | 45 | Irrigation | 1954 |
| Aepoeha Reservoir | High | Fair | 42 | Irrigation | 1913 |
| Halenanahu Reservoir | High | Unsatisfactory | 40 | Irrigation | 1920 |
| Aepoekolu Reservoir | High | Poor | 40 | Irrigation | 1910 |
| Kepani Reservoir | High | Poor | 40 | Irrigation | 1954 |
| Mau Reservoir | High | Poor | 38 | Irrigation | 1901 |
| Aahoaka Reservoir | High | Poor | 38 | Irrigation | 1910 |
| Elima Reservoir | High | Poor | 37 | Irrigation | 1901 |
| Hukiwai Reservoir | High | Poor | 36 | Irrigation | 1910 |
| Aepoalua Reservoir | High | Poor | 35 | Irrigation | 1915 |
| Elua Reservoir | High | Poor | 34 | Irrigation | 1902 |
| Wailua Reservoir | High | Fair | 34 | Irrigation | 1920 |
| Puu O Hewa Reservoir | High | Poor | 33 | Irrigation | 1915 |
| Pond No. 1 At Kauai Ranch | High | Fair | 32 | Irrigation | 2007 |
| Omao Reservoir | High | Unsatisfactory | 32 | Irrigation | 1915 |
| Waikaia Reservoir | High | Poor | 30 | Irrigation | 1951 |
| Okinawa Reservoir | High | Poor | 29 | Irrigation | 1920 |
| Waita Reservoir | High | Poor | 28 | Irrigation | 1906 |
| Pinau Reservoir | High | Unsatisfactory | 28 | Other | 1916 |
| Halaula Reservoir | High | Poor | 26 | Irrigation | 1905 |
| Kaawanui Reservoir | High | Poor | 26 | Irrigation | 1950 |
| Aii Reservoir | High | Poor | 26 | Irrigation | 1920 |
| Mana Reservoir | High | Unsatisfactory | 25 | Irrigation | 1905 |
| Kalihiwai Reservoir | High | Poor | 25 | Irrigation | 1920 |
| Kapa Reservoir | High | Poor | 24 | Irrigation | 1901 |
| Lower Kapahi Reservoir | High | Unsatisfactory | 24 | Other | 1861 |
| Waiakalua Reservoir | High | Poor | 23 | Recreation | 1920 |
| Mauka Reservoir | High | Poor | 19 | Irrigation | 1910 |
| Pia Mill Reservoir | High | Poor | 17 | Irrigation | 1910 |
| Kauai Lagoons | High | Fair | 13 | Other | 1987 |
| Ioleau Reservoir | Low | Poor | 48 | Irrigation | 1902 |
| Puu Opae Reservoir | Low | Unsatisfactory | 41 | Irrigation | 1930 |